PHOENIX - When he burst on the scene as a 2-year-old in Southern California back in 2004, Diligent Prospect looked like a potential player on the Derby trail. While injury took away much of his 2005 season, Diligent Prospect has managed to find his calling the past year: becoming a quality sprinter. He takes that reputation into Saturday's $45,000 G Malleah Handicap at Turf Paradise. The six-furlong event, which honors the world-record holder for the distance, lured a field of eight.